325121531465 has 4 divisors (see below), whose sum is σ = 390145837764. Its totient is φ = 260097225168.

The previous prime is 325121531453. The next prime is 325121531477. The reversal of 325121531465 is 564135121523.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (325121531453) and next prime (325121531477).

It can be written as a sum of positive squares in 2 ways, for example, as 58601273929 + 266520257536 = 242077^2 + 516256^2 .

It is a cyclic number.

It is not a de Polignac number, because 325121531465 - 2¹⁰ = 325121530441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32512153142 + ... + 32512153151.

It is an arithmetic number, because the mean of its divisors is an integer number (97536459441).

Almost surely, 2^325121531465 is an apocalyptic number.

It is an amenable number.

325121531465 is a deficient number, since it is larger than the sum of its proper divisors (65024306299).

325121531465 is an equidigital number, since it uses as much as digits as its factorization.

325121531465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65024306298.

The product of its digits is 108000, while the sum is 38.

Adding to 325121531465 its reverse (564135121523), we get a palindrome (889256652988).

The spelling of 325121531465 in words is "three hundred twenty-five billion, one hundred twenty-one million, five hundred thirty-one thousand, four hundred sixty-five".